Computer seem to shut down and start back at his own leasure.Changed PSU cleaned CPU fan and heat sink (sys temp 22c, CPU temp 46c). Disconnected all drives and still the same. It's a KM4M motherboard.
Can you help
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Re: shutting down then starting back up whenever
Ya. If it keeps re-booting then it may be a virus (my things virus) If not, go to system properties and start up and recovery settings. remove reboot on error settings (in XP) It doesnt fix the root cause but may stop your frustration
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- Stop Overclocking your CPU.
- Make sure your Heat Sink is placed properly above the processor.
- Clean the Processor fan, Heat Sink and other peripherals.
- Use High Speed fans.
- Use CPU Heat Sink Paste in the processor.
- Fix OS registry with reliable program like I always use Reginout.
- Shut down your computer at least two hour a day.
Three causes of ovheating: 1) Dust. Dust inside the computer, Dust around the vents, fans, cpu and heat sink. Take a can of compressed air and clean the dust out of the computer.
2) A Fan not working. Make sure the fan inside the Power Supply where you plug the power cord in works. Also there is a fan that sits on top of the CPU and Heat Sink. Make sure it works. Normally the system will give you an error message if the fan is not working.
3) Thermal Paste - The Thermal Paste around the cpu and heat sink has dried up or is too thin to keep the unit cool. Apply a fresh coat of Thermal Paste on the CPU and Heat Sink.
It could be overheating. After it shuts down, restart it, and enter BIOS SETUP, and look for a "PC Health" or "Status" entry on the menu. If you're lucky, it will report the current CPU temperature, and the speed of the fans, and the settable temperature at which it will shut itself down.
Check the capacitors on the motherboard -- any capacitor with a "dome" on top, instead of perfectly-flat, is a leaking capacitor that is intermittently failing.
Your pc CPU FAN is not working, you need open it and clean fan,, and under fan, on CPU there is termo cream, don't frgot about it, you need clean it and put new termocream. it is nessasary for cool CPU, that Cpu can not be warm.
Two possibility , first the 1of the heat sinks may have lost it's thermal seal to the chips ie G.P.U. or C.P.U. this is more common when consoles are played vertically . Second but less common the G.P.U. temp feed connection has become intermittent and tripping a thermal shut down.
Remove heat sinks for G.P.U. and the C.P.U clean off the old heat sink compound and replace with new ( articsilver 5 ).
If the console still over heats ( two red lights) then the G.P.U C.P.U will need to be re-flowed back to the board that normally corrects the problem in 90% of over heating problems.
Will it run in safe mode? If so, then the problem is software. If not, you most likely have a heat problem. Blow all the dust out of the fans and the CPU heat sink. Not knowing how old the computer is, whenever I see a time-related problem like this I suspect heat build-up. I'd even go so far as to take the heat sink off of the CPU, apply heat sink paste, and reseat heatsink and try to start it again.
As a temporary measure, taking the side panel off the dell 5150c stopped it from shutting down, so in my case it was clearly a heat problem, as suggested by previous the poster. The following instructions assume you're comfortable replacing computer hardware components - do at your own risk!
The solution is to buy an 'air duster' and some thermal compound for the CPU heat sink. If your CPU fan doesn't sound healthy (mine didn't), also buy a new one (ca. £20 on ebay: search for G9474 ).
Read the service manual: http://support.dell.com/support/edocs/systems/dim5150C/en/sm/index.htm for details on how to install / remove the fan and heat sink.
Clean out dust from the heat sink with air duster. Remove the fan, and clean or replace (recommended). Also clean the grill in front of the fan. Clean off old thermal compound from the CPU / heat sink and replace with a thin layer of fresh compound. Replace heat sink and side panel and you're done.